Grumpy_Mike:
That is just a nonsense. The processor always works at the same speed irrespective of the amount of processing it has to do. In fact with it doing nothing or working out complex maths the processor knows no different.::::SNIP::::
Apparently my friend, you are in the same group that has a lot to learn about RISC processing. And from your your description, a lot to learn about pre-emptive multitasking.
Best of Luck
Jesse